Global Navigation Satellite Systems Engineering, Policy, and Design
The low-cost, lightweight platform can be easily configured for a variety of applications and test scenarios. This article focuses on its use for GNSS authentication.
By Inside GNSS
Space debris poses a danger to PNT. Here’s a look at the threat and how the FCC plans to regulate its removal.
By Dawn M.K. Zoldi (Colonel, USAF, Ret.)
BAE Systems has enhanced anti-jam (AJ) capabilities on military weapon systems and the platforms that host them, giving both the same level of protection from interference—with such protection becoming even more critical as threats from adversaries continue to increase.
By Renee Knight
A new GNSS antenna array algorithm helps simultaneously estimate the antenna array attitude and direction of the incoming multipath wave fronts, improving attitude and position accuracy.
By Inside GNSS
Identifying GNSS interference based on ADS-B Out data and validating that data against confirmed interference from fielded airborne receivers.
By Inside GNSS
Detecting interference using machine learning algorithms to monitor ADS-B data.
By Inside GNSS
The European Space Agency’s new navigation head, Francisco-Javier Benedicto Ruiz, has a lot to say about GNSS, both present and future. We recently spoke with him about his views on satellite navigation, signal vulnerability and authentication, and the agency’s working relationship, or not, with Russia. The technical team behind the Galileo authentication service and industry representatives developing alternative positioning, navigation and timing solutions also share insights.
By Peter Gutierrez
As guest columnist Dino Smajlovic explains, testing allows for inertial error characterization and understanding, ensuring proper error budgets and more accurate navigation solutions. Rate tables are among the tools used, with some allowing testing, characterizing and modeling in one installation step.
By Inside GNSS
RTCA is working to develop new standards to tackle GNSS growth and challenges. Here’s an update on the special committee’s progress, provided during a recent webinar.
By Dawn M.K. Zoldi (Colonel, USAF, Ret.)
GMV Aerospace and Defense has developed a system for a pan-European, public time distribution. At the recent AltPNT Demonstration Day at the European Commission’s Joint Research Center (JRC), Ricardo Píriz, from GMV AD’s GNSS Time and Frequency Group, explained how his company can provide Galileo System Time (GST) or Galileo UTC via existing networks.
By Peter Gutierrez
Errors in inertial sensor measurements are accumulated over time, leading to drift in INS navigation outputs. While gyro bias is the main contributor, other factors, such as accelerometer bias and noise, are important to consider for balancing the overall error budget.
By Andrey Soloviev
Xona Space Systems recently launched a test satellite on SpaceX’s Transporter 5, aiming to display high-quality commercial PNT Low Earth Orbit (LEO) signals from a payload suitable for small satellite deployment—and Hexagon | NovAtel has announced support of those efforts.
By Renee Knight
Robustness to GPS jamming and spoofing is critical for military applications yet challenging, and numerous alternative sensing techniques have been explored over the years. Virtual aiding methods have proven effective, with the ability to constrain and localize the search space for improved operability in GPS-denied environments.
By Inside GNSS
